My daughter breathing by mouth while sleeping, if mouth where closed she feel difficult to breath. but when she is awake, everything is normal. what will be the reason, should I have to consult pediatrician?

A. hi many different reasons can cause this issue it can be small nasal passage or blocked nose problem or it can be a result of large adenoids so if there is other problems like dry mouth , fatigue at day time ,snoring ,restless sleep etc too please visityour pediatrician